obliquities的读音 obliquities中文意思

读音 
n. 倾斜度( obliquity的名词复数 )
obliquities 用法和例句
Well then why all the revolution orbits of the 9 principal planets round the sun are not parallel to the equator plane of the sun but different obliquities exist .
那么九大行星围绕太阳公转的轨道为什么不都是处在太阳的赤道面平行线上,而是存在着各不相同的倾角?